Fault Diagnosis
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ADTS 405 R/F Mk2 Instruction Manual-English | 61
Table 6-1: Fault Advice and Action
Fault
Symptom
Probable Cause
Action
F1
Pump power-on indicator does
not light.
Faulty power supply.
Unserviceable fuse, AC/DC
power supply. Faulty power
supply cable.
Check power supply.
Check/replace power supply
fuse or reset circuit protection
device.
Check/replace fuse (front
panel). Replace cable and re-
test.
F2
AC or DC power indicator does
not light.
AC or DC power supply cable
to ADTS 405 Mk2 rack.
ADTS 405 Mk2 rack AC input
fuse.
PSU fault.
Check/replace cables.
Check/replace fuses.
Record fault and return
ADTS 405 Mk2 to depot for
repair.
F3
Display power-up message
appears and status light
remains red.
Internal control computer
fault.
Record fault and return
ADTS 405 Mk2 to depot for
repair.
F4
No front panel display power-
up message, status light green.
Display fault.
Use an available hand-
terminal.
Record fault and return
ADTS 405 Mk2 to depot for
repair.
F5
No hand-terminal display,
status light green. Hand-
terminal key illumination on.
Hand-terminal fault (cable
OK).
Replace hand-terminal.
Record fault and return hand-
terminal to depot for repair.
F6
No hand-terminal display,
status light green. Hand-
terminal key illumination not
on.
Hand-terminal.
Replace hand-terminal.
Hand-terminal or hand-
terminal cable fault.
Record fault and return hand-
terminal/cable to depot for
repair.
F7
No front panel display DK415
message. Status light flashing
red/orange.
No front panel display
detected.
Internal fault.
Record fault and return
ADTS 405 Mk2 to depot for
repair.
F8
No hand-terminal or front
panel display DK415 message.
Status light flashing red/
orange.
No hand-terminal or front
panel display detected. Hand-
terminal fault. Cable fault.
Internal fault.
Remove hand-terminal and re-
test.
F9
Status light off.
Internal PSU fault.
Record fault and return
ADTS 405 Mk2 to depot for
repair.
F10
Status light steady orange.
System fault.
Record fault and return
ADTS 405 Mk2 to depot for
repair.